121210201022123 has 8 divisors (see below), whose sum is σ = 122466687334320. Its totient is φ = 119953855457280.

The previous prime is 121210201022089. The next prime is 121210201022143. The reversal of 121210201022123 is 321220102012121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121210201022123 - 2¹⁸ = 121210200759979 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121210201022095 and 121210201022104.

It is not an unprimeable number, because it can be changed into a prime (121210201022143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33455093 + ... + 36900726.

It is an arithmetic number, because the mean of its divisors is an integer number (15308335916790).

Almost surely, 2^{121210201022123} is an apocalyptic number.

121210201022123 is a deficient number, since it is larger than the sum of its proper divisors (1256486312197).

121210201022123 is an equidigital number, since it uses as much as digits as its factorization.

121210201022123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70373677.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 121210201022123 its reverse (321220102012121), we get a palindrome (442430303034244).

The spelling of 121210201022123 in words is "one hundred twenty-one trillion, two hundred ten billion, two hundred one million, twenty-two thousand, one hundred twenty-three".